Mathematics
Use trigonometric tables to find tangent of :
(i) 37°
(ii) 42° 18'
(iii) 17° 27'
Trigonometric Identities
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Answer
(i) From table,
tan 37° = 0.7536
Hence, tan 37° = 0.7536
(ii) From table,
tan 42° 18' = 0.9099
Hence, tan 42° 18' = 0.9099
(iii) From table,
tan 17° 24' = 0.3134
Difference of 3' = 0.0010 [To add]
∴ tan 17° 27' = 0.3134 + 0.0010 = 0.3144
Hence, tan 17° 27' = 0.3144
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